<template>
	<view class="cart-container" v-if="cart.length !== 0">
		<!-- 使用自定义的 address 组件 -->
		<!-- 购物车商品列表的标题区域 -->
		<view class="cart-title">
			<!-- 左侧的图标 -->
			<uni-icons type="shop" size="18"></uni-icons>
			<!-- 描述文本 -->
			<text class="cart-title-text">购物车</text>
		</view>

		<!-- 商品列表区域 -->
		<uni-swipe-action>
		  <block v-for="(goods, i) in cart" :key="i">
		    <uni-swipe-action-item :options="options" @click="swipeItemClickHandler(goods)">
		      <my-goods :goods="goods" :show-radio="true" :show-num="true" @radio-change="radioChangeHandler" @num-change="numberChangeHandler"></my-goods>
		    </uni-swipe-action-item>
		  </block>
		</uni-swipe-action>

		<!-- 结算区域 -->
		<my-settle></my-settle>
	</view>
	<!-- 空白购物车区域 -->
	<view class="empty-cart" v-else>
		<image src="/static/cart_empty@2x.png" class="empty-img"></image>
		<text class="tip-text">空空如也~</text>
	</view>
</template>

<script>
	import badgeMix from '@/mixins/tabbar-badge.js'
	import {
		mapState,
		mapMutations
	} from 'vuex'

	export default {
		mixins: [badgeMix],
		computed: {
			// 将 m_cart 模块中的 cart 数组映射到当前页面中使用
			...mapState('m_cart', ['cart']),
		},
		data() {
			return {
				options: [{
				  text: '删除',
				  style: {
				    backgroundColor: '#C00000'
				  }
				}]
			}
		},
		methods: {
			...mapMutations('m_cart', ['updateGoodsState', 'updateGoodsCount', 'removeGoodsById']),
			// 商品的勾选状态发生了变化
			radioChangeHandler(e) {
				this.updateGoodsState(e)
			},
			// 商品的数量发生了变化
			numberChangeHandler(e) {
				this.updateGoodsCount(e)
			},
      swipeItemClickHandler(goods) {
				console.log('aa')
        this.removeGoodsById(goods.goods_id)
      }
		},
	}
</script>

<style lang="scss">
	.cart-title {
		height: 40px;
		display: flex;
		align-items: center;
		font-size: 14px;
		padding-left: 5px;
		border-bottom: 1px solid #efefef;

		.cart-title-text {
			margin-left: 10px;
		}
	}

	.goods-item {
		// 让 goods-item 项占满整个屏幕的宽度
		width: 750rpx;
		// 设置盒模型为 border-box
		box-sizing: border-box;
		display: flex;
		padding: 10px 5px;
		border-bottom: 1px solid #f0f0f0;
	}

	.cart-container {
		padding-bottom: 50px;
	}

	.empty-cart {
		display: flex;
		flex-direction: column;
		align-items: center;
		padding-top: 150px;

		.empty-img {
			width: 90px;
			height: 90px;
		}

		.tip-text {
			font-size: 12px;
			color: gray;
			margin-top: 15px;
		}
	}
</style>

<my-goods :goods="goods" :show-radio="true" :show-num="true" @radio-change="radioChangeHandler" @num-change="numberChangeHandler
